MC9S12HZ256 Datasheet, PDF (292/692 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 10 Stepper Stall Detector (SSDV1)
10.1.3 Block Diagram
Coil COSx
x = A or B
Coil SINx
VDDM
VDDM
T1
COSxP
P
A
S1
D
S2
T2
T3
COSxM
P
S3
A
D
S4
T4
VDDM
VDDM
T5
SINxP
P
A
S5
D
S6
T6
T7
SINxM
P
S7
A
D
S8
T8
VSSM
reference
integrator
VSSM
C1
R1
–
+
VDDM
R2
R2
sigma-delta converter
(analog)
VSSM
VSSM
VSSM
DAC
–
DFF
16-bit accumulator
+
register
4:1 MUX
2:1 MUX
16-bit load
register
16-bit modulus
down counter
Bus Clock
1/8
1/2
1/2
1/2
1/8
Figure 10-1. SSD Block Diagram
MC9S12HZ256 Data Sheet, Rev. 2.04
292
Freescale Semiconductor